Too many hot days in the summer and cold temperatures during winter can make fish in shallow lakes, rivers, and ponds sluggish. But why? Remember that all fish are cold-blooded, and therefore they can't keep their body temperatures at a constant level the way humans and other warm-blooded animals.

When we get lost on a trip, we depend on GPS on a smartphone. But now it's no longer there. Because, just looking at the wrist, you can see the GPS to know the position and direction to go. Yes, Tactical SmartWatch is a type of smartwatch that contains features that are very useful for the user. This watch...